Plumb line guide



Sept. 22, 1931. F. G. BAKER 1,824,321

PLUMB LINE GUIDE Filed 001;. 2'7, 1928 InL/En UI" Patented Sept. 22, 1931 UNr -E i 5 1,sz4,3n

FRANoIse. BAKER, or emoaeo; IELINOISY c mums- LINE. some.

. Applicationitled ctoberf27lj1928. Serial No. 315,3 1.

My invention relates in genera'l. to a plumb line guide or holder and, m'orespecilically',

to a clamping device which maybefastened' to certain parts and acts as a guide orholder for a plumb line. This device isespecially useful in corner bead. erection, as will be later explained.

The manner of erecting so-called fcorner beads 1s well known to artisans, and it is 1 strength and rigidity to the plastered corner and also to give the plasterer a definite line to follow. These corner beads may be of greath length, for instance in large halls and lobbies, or may be mounted in sections, and must be carefullyerected and allgned.

In addition to so-called corner beads there are varlous other types of beads used in construction, one of which is the so-called base 7 ground which has a narrow edge similar to a corner bead but is mounted on a flat sun- The base ground is often used face. around the base of a wall above the floor, for

instance. as a separation between the plastered wall and a cement flooringand base board. The plumb line holder, while especially useful in corner bead and base ground erection, is also useful in various other forms of building construction and, in fact, is usei ful at anytime when it is desired to fasten a plumb line or any other type of line.

An object of the invention, therefore, is to provide a simple clamp or holder'which is readily attached to a surface to be aligned and which is adjustable to accommodate any size plumb bob or to guide and retain the line at various distances from the edge to be aligned. V

Referring to the attached I sheet of drawings, Fig. 1 is a front view of the plumb line "clamp; attached in working position to a sec tion-of corner bead; V

Fig. 18 a'v1ew taken from above in Fig'al.

- Fig. isa view oft-he clfampor holder ta-lienfromthe-left in Fig. l lwith the corner head removed andfthe jaws of the clamp Open," i. Fig. 4: is a view of theclamp of Fig. 1 taken from the rear-with themovable jaw of" the clamp'removeda' FigrSshows' two-of the clamps or holders, such as showninthe remaining'. figu-res-,

- mounted on base ground and withv a line stretched betweenthetwo holders.

Referring' nowto'; the above drawings, I will first explai-n' the construction of the holder and later-its operation. The holder has a part laforme'd from "sheet steel. to which is riveted'erwelded a heavierpartQ having i r an extended en'dforming one'wjawr3 of the clamp. Af'se'cond' jaw 45 of the clamp is also hardened steel and has a pair of guiding- 1 pins, 5 and (i -registering with a pair of holes in the opposed jaw A. large thumb screw 7' is provided for clamping the two jaws together anaits thread passes'througli. acl'earance hole-in jaw 4 a-nd into a threaded is a back-'turned hp 8 andthere is another section riveted to plate I also having its-edge holein jaw 3. On the lower end of plate 1 turned back to form al-ip 9. 'Thesetwo' lips form' a "V shapedaw which rests adjacent the endofth'e corner bead. The part2 ismilled" away near its" upper; edge (Fig. 4) at, 10;:forming a pocket or slide intowhich'th'e g'uide' l-li is'i'nsertedi 'The guide 'll -has a V-shapednotch 12 in itsupper edgeand slides freely back and forth in the slide. This guide '11 has a slot 13 shown dotted lines, whichregisters with two clearance holes- 14 and'15inpartf1 Opposite-these clearance holes are pair of threaded holes into which the screw 16 may be inserted to hold the guide 11 in any desired position. On thepa-rt 2 is mounted a. springholder held by a screw 1?. This holder" comprises apair ofdiscs or washers 18 and 19 held together under tension of the springQ'O and adjustable thereby. 1

The holder may be fastened; as shown in Figs. 1 and 2 to a corner bead such as 21 by adjusting the screw 7 to clamp the jaws 3 and 4 around the projecting bead so that the lips 8 and '9 rest adjacent thebead. The line of the plumb bob is then hug through the notch 12 and is then fastened byv taking a turn of the free end around the spring holder as shown. The plumb bob will then hang down adjacent the bead and alignment can be readily assured. Referring to F ig. 1, I have shown the guide 11 in one posi-i tion in full lines with the plumb line in position, and it will be readily understood that the guide may guide may be removed and reversed as shown in dotted lines and the screw reinserted. Thus it will be seen that'the line can be held in any position between that shown in full and that in dotted lines in Fig. 1. Also the line may be inserted between the lips 8 and 9 as shown in Fig. 5, in which case the line will lie directly adjacent the edge of the bead. In many instances when erecting base grounds such as that shown at 22 in Fig. 5, it may be desirable to use two holders and fasten the line between the two as shown in this figure. Again the line may be secured as shown in lips 8 and 9 or; may be held farther away from the ground by using the notches in the guide 11. v I w 7 In Fig. 1 I have shown thecorner bead and the plumb'line broken in the center indicating greater length, and in Fig.5 I have shown the base ground an'd linealso broken at the center. a sectional view of the base ground between the broken lines showing clearly its construction. As the bead andbase ground form no part of my present invention, further details are thought unnecessary. It should be understood that although have shown this holder in connection with corner bead and base ground erection, I do not desire to be so limited but contemplate usi'ngthe holder of my invention wherever it is desired to fasten or guide a line or plumb line to any, objector device for any purpose.

Having fullydescribed and ascertained the features and aspects of my invention, what I considertobe new and desire to. have protected by Letters Patent will be pointed out inthe appended claims. e

hat is claimed is r 1. In a plumb line holder, having a clamp for securing the holder to the surface to be aligned anda forked extension 'for engaging the surface to retain the holder in position, an adjust-able guide having a notch, and means for fastening the line and holding it in place either in he notch or the forked end.

2. A plumb line holder consisting of a pair of metal parts secured together side by side: and one-having a rabbetin the side he moved back away from the bead by simply loosening screw 16 or the In addition I have inserted 'a'line'guide movable relative to the clamp and means for holding the line in position either in said forked extension directly adjacent the surface or in said guide at varying distances therefrom.

4. In a plumb lineholder, a metal clamp,

having an adjusting screw for securing the holder to the device to be aligned, there being a groove in the holder, a notched guide movable in said groove and means for fastening the guide at Varying distances from the surface to be aligned, and a spring fastener into which the line may be inserted and by means of which the line is secured.

In witness whereof, I hereunto subscribe my name this 24th. day of October, A. l).

FRANCIS G. BAKER. 

